AP7311 Datasheet, PDF (1/13 Pages) Diodes Incorporated – 150mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator

Features
AP7311
150mA, Low Quiescent Current, Fast Transient
Low Dropout Linear Regulator
Description
• 150mA Low Dropout Regulator with EN
• Very low IQ over full load: 65µA
• Wide input voltage range: 2V to 6V
• Wide adjustable output: 0.8V to 5.0V
• Fixed output options: 1.0V to 3.3V
• PSRR: 65dB at 100Hz
• Fast start-up time: 80µs
• Stable with low ESR, 1µF ceramic output capacitor
• Excellent Load/Line Transient Response
• Low dropout: 150mV typical at 150mA
• Current limit protection
• Short circuit protection
• Thermal shutdown protection
• Ambient temperature range: -40ºC to 85°C
• SOT25: Available in “Green” Molding Compound
(No Br, Sb)
• Lead Free Finish/RoHS Compliant (Note 1)
The AP7311 is a 150mA, adjustable and fixed output voltage, low
dropout linear regulator. The device included pass element, error
amplifier, band-gap, current limit and thermal shutdown circuitry.
The device is turned on when EN pin is set to logic high level.
The characteristics of low dropout voltage and low quiescent
current make it suitable for low power applications, for example,
battery powered devices. The typical quiescent current is
approximately 65μA.
Built-in current-limit and thermal-shutdown functions prevent IC
from damage in fault conditions.
The AP7311 is available in SOT25 package.
Applications
• Notebook and Desktop Computers and Pheripherals
• Portable Devices
• Battery Powered Devices
• CD-ROM, DVD and LAN Cards
Typical Application Circuit
V_IN
IN
OUT
AP7311
1uF
Enable _EN
GND
V_OUT
1uF
V_IN
IN
OUT
AP7311
R1
1uF
Enable _EN
ADJ
GND
R2
V_OUT
1uF
Fixed Output
Adjustable Output
V_OUT
= V_{REF ⎜⎜⎝⎛}1 +
R₁
R₂
⎟⎟⎠⎞
AP7311 Rev. 2
1 of 13
www.diodes.com
NOVEMBER 2009
© Diodes Incorporated